Why relationships tend to be fragile?

Why relationships tend to be fragile?

'Man is not an island' and 'man is a social animal' are the oft quoted cliches.

This characteristic of man perhaps may be the key to his seeking relationships through out his life.

An  inevitable relationship begins with the mother - simply  because of our total inability as infants to take care of ourselves.  Therefore, the first relationship that a  human being enters into, though as an inevitable necessity,  is with his mother.

In the next stage we seem  to become somewhat independent in many ways - of taking care of our basic needs. Yet to satisfy  those needs we have to seek and interact with many people.

As we grow up relationships come into existence as a natural consequence of our needs: To play - we need people. When we go to school - we are part of a class with many other students. The place we live has many people with whom we interact. When go into outer world we meet people. Thus, every aspect of us  brings many people into our lives and relationships occur naturally.

Over the centuries, we have given labels to diferent relationships:
Parents - children.
Siblings.
Relatives.
Husband &wife
Teacher - student
Causal aquintences.
Acquitences.
Friends
Employer - employee
Business partners.
Sellers - buyers.
As i said many more relationships come into existance on the basis of many aspects of us.

If we closely look at these relationships, we will discover that some need of a human being is met in each of these relationships. So,  would  it be safe to say that our many needs create many relationships?

Some needs are temporary and some needs are permanent. Perhaps, this very nature of needs gives rise to temporary  and long term relationships.

Temporary relationships come into existence to meet temporary needs and when the need is met the relationships disappear as naturally as they occurred.

Our  long terms needs require long term relationships.

If relationships are so fundamental to  human existence, then why do relationships tend to be so fragile and break at the drop of a hat?

I think the following quote  gives insight into why relationships tend to be fragile:

"Always recognize that human individuals are ends, and do not use them as means to your end." -Immanuel Kant

Therefore, if we make our needs as ends for which we use people to achieve them, then when the needs are met we no longer need those people and we will readily abandon them.

But if we make people as the end, then we nurture them as true human beings and our needs are met as a consequence of nurturing people. This elevates us as well as people whom we nurture, thus making the relationship satisfying.

Therefore, I would pray  God to grant me the serenity to treat people as the end  and not as means to achieve my needs and the sensibility  to recognize this difference.